PEOPLE has a first look at Tuesday's episode of 'The Drew Barrymore Show,' which also features Ree Drummond doing her best impression of Barrymore Dave Quinn is a Senior Editor for PEOPLE.

Madonna, Drew Barrymore, Selena Gomez ... The ladies grooved together during the song — with Spears still in her wedding dress! — as Madonna held up a drink at the end in celebration.

Before Meghan Markle jetted off to New York City to tape an episode of The Drew Barrymore Show, she recruited kids Prince Archie and Princess Lilibet, as well as her wedding dress designer ...

Before Meghan Markle jetted off to New York City to tape an episode of The Drew Barrymore Show, she recruited kids Prince Archie and Princess Lilibet, as well as her wedding dress designer, Clare ...